<!DOCTYPE html>
<meta charset="utf-8">
<title>test reference</title>
<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  font: 20px/1 Ahem;
  margin: 1em 0;
  white-space: pre;
}
</style>

<p>Test passes if all black boxes below have the same width and height and are aligned vertically.
<div> x<br> x</div>
<div> x<br> x</div>
<div> x<br> x</div>
<div> x<br> x</div>
<div> x<br> x</div>
